Motor



EL G. PETTIT March 1 7, 1931.

MOTOR Filed May 22, 1926 WITNESS:

Patented Mar. 17, 1931 pairs:

EZRA G. PETTIT, F CBOOKSVILLE,-OHIO MOTOR Application filed May '22,

The objectof this invention is to provide improved means for elevating a portion of the water flowing from a spring or other source of supply.

A further object is toprovide for a considerable fall fora portion of the water, to be conveyed to apoint of discharge, andforthe elevation ofthe remainder of the supply.

A further object is to provide an apparatus including a plurality of pump cylinders and pistons, and pipe connections, the pistons operating in reverse relation, and being connected by a lever controlling an automatic three-way valve, so that when the lower cylinder has been filled from the bottom, and the upper cylinder has been simultaneously filled from the top, the three-Way valve will be closed on the supply side and will be opened toward a discharge or waste pipe, permitting 20 the water in the lower cylinder to pass out, and resulting in the downward movement of the piston therein and the upward movement of the upper piston, for forcing the Water from the upper cylinder to a point of consunjiption.

Vith the foregoing and other objects in view, the invention consistsin the novel construction and arrangement of elements described, illustrated and claimed, it being understood. that modifications may be made in g from the spirit of the invention.

In the drawings forming part of this application:

Figure 1 is a view showing the two cylinders in vertical section and showing the re mainder of the apparatus in elevation.

Figure 2 is a detail chiefly in section, sh ow ing a three-way valve adapted to be used below the lower cylinder and at the point shown in Figure 1.

Figure 3 shows the valve casing of Figure 2 from the opposite side, stops for limiting the movement of the arm connected with the weight being illustrated, these stops being at an angle of 90 degrees.

An upper cylinder is designated 10, this cylinder being open atthe bottom, and a lower cylinder is designated 12, the cylinder last named, being open at the top. Pistons 1 3 and 14 are positioned in the respective cylinwithin the scope of the claim without departi veys'wa-ter through connection 27 directlyto .,ports of the valvemeniber commi' nioate, tin

1926. Serial No. 111,054;

dcrs, and piston'13 has connectionby means of rod 15 with one end of lever 16, while piston lat has connection through rod 17 with the-opposite end of lever 16. This lever is mounted intermediate of the cylinders, and is shown in Figure 1 as being in horizontal position when thepistons are at points intermediate of the ends of their strokes, It will be observed-that thepistons operate simultaneously in reverse relation, so far as direction is'concerned, and that they move at the same time toward the closed ends of the cylinders.

Lever 1 6 is pivotally mounted at 18 on standard19, supported on a suitable base 20. this base also supporting uprights such as 21 and 22, which in turn support upper cylinder 10. The lower cylinder rests on base 20.

Extending fromthe upper end of cylinder 10 is-a vertical pipe 24, and extending from the lower end of cylinder 12 is a vertical pipe 25, the arrows-showing the direction of the How of water therethrougli.

A pipe extending from any suitable sourc of supply isdesignate d 26, and communicates .with pipe 24 at point27, where asuitable form of pipe connection is illustrated. A check valve'28 preventsthe return flow of water through the pipe section 29, and another check valve, designated 30, is placed in pipe 24. Pipe26 has communication through connection 31 with pipe 32 extending downwardly and then horizontally, so that it may have W connection withpipe25, from the lower cylii'rder, by means of valve casing or housing 3'7. Pipe 32 constitutesa supply pipe for cylinder 12 and conveys water to the lower portion thereof, below piston 14,, while pipe 26 con.

the upper part of cylinder 10.

The three-way valve shown in Figures 1, 2

and 3 constitutes an important feature, and

this element is designated. 37,;and. the three Figure 2, with suppilypipe. 32, discharge or waste pipe25, and conneetion25 leading to the bottom portion of cylinder 12. [The housng forevalve fiiiisshownntf37f and the stem 38 of the valve extends through the housing and carries a radial arm 39 supporting on its outer end a weight 40. The limit of movement of arm 39 is represented by the stops 41 and 42, it being understood that these are on the farther side of the casing as the latter is viewed in Figure 2.

Valve stem 38 carries a gear wheel or pinion'43 meshing with a segmental rack 44 pivoted at 45 and having connection at 46 with rod 47 passing through eye member 48 on lever 16. Collars 51 and 52 on rod 47 limit pilative movement between this rod and leve Water flowing through supply pipes 26 and 32 passes into the upper end of cylinder 10 and into the lower end of cylinder 12 and the movement of the pistons causes the left end of lever 16 to move downwardly and the right end to move upwardly. At the limit of movement in this direction collar 52 is engaged by eye member 48 on lever 16, and segmental rack member, or arm, 44 moves about its pivot and causes the rotation of gear wheel 43 and the rotation of valve 37, from the position of Figure 2, in a clockwise direction, as illustrated in dotted lines in Figure l. The supply to cylinder 12 is thereby cut ofi from pipe 32 in Figure 2, and water is permitted to flow through connec tion 25, valve 37, and pipe 25 to a point of discharge. This represents the portion of water not utilized or saved for delivery to a point of consumption. When cylinder 12 has been emptied through pipe 25, the lever 16 will have tilted to a position in which piston 13 in the upper cylinder has forced the water therein outwardly through pipe 24, for delivery where desired. The check valves 28 and 30 operate in an evident manner in preventing the return of water thru connection 29 or the return of water from pipe 24 to cylinder 10.

The opening of valve 37 to the discharge pipe 25, and the passage of water from cylinder 12, decreases pressure below piston 14, and as this piston is under full atmospheric pressure from above, it will move downwardly and elevate piston 13 of cylinder 10.

Piston 13 will operate against the fluid in cylinder 10 and in pipe 24, but nevertheless if the elements of the apparatus are properly proportioned, the air pressure above piston 14will exert sufiicient lifting force on piston 13 (through the connections shown), to raise water in pipe 24 to a height not exceeding 32 feet, depending upon the degree of efliciency attained. V

The length of pipe 25, or the vertical height of the water therein, determines the rate of discharge, under gravity, from that pipe, and

facilitates the downward movement of piston 14 under atmospheric pressure.

Having thus described the invention, what is claimed as new, is

s V In a vacuummotor, a cylinder, a valve cas ing having a port communicating with the lower portion of the cylinder, and having a port in communication with a source of water supply, and a discharge port, a rotatable ported valve member controlling the ports of the casing, a weighted arm connected with the valve, and extending radially with reference to the axis of rotation, a pivoted element and means engaged thereby for rotating the valve, a piston within the cylinder, a rod connected with the piston, a lever pivotally mounted and pivotally connected with the rod, a second rod pivotally connected with the pivoted element controlling the valve, and means carried by the second rod and lever for imparting thrust to the rod, longitudinally thereof, at the approximate limit of angular movement of the lever about its pivot, and at a corresponding point in the direct movement of the piston in its cylinder, the piston and lever being movable independently of the 'rod and valve prior to the approach of the aforesaid limit of movement thereof.

In testimony whereof I afiix my signature.

EZRA G. PETTIT. 

